3RD MEETING DISCUSSION

Question 1

Also called as pencil of light. The path of which light travels in any direction.
(A bundle of photons of light)

Answer 1

RAY OF LIGHT

Question 2

A group of light rays that travels in given direction.
(A bundle of “RAYS” of light)

Answer 2

BEAM OF LIGHT

Question 3

Categories of beam of light

Answer 3

CONVERGENT AND DIVERGENT

Question 4

Categories of beam of light: Group of light rays that converge from a point source to a given single point

Answer 4

CONVERGENT BEAM

Question 5

Categories of beam of light: from a light source travel NEVER able to CONVERGE to a certain point… not unless towards a certain point.

Answer 5

DIVERGENT BEAM

Question 6

We define infinity as to what measurement?

Answer 6

6M OR 20FT BEYOND

Question 7

• Also known as light source.
• A light that emits a SINGLE, INFINITELY SMALL POINT in space an radiates light equally in all directions.
• We use this term instead of light source because “Not all objects emit light, but rather reflect or radiate light.”

Answer 7

POINT SOURCE

Question 8

• also known as BASE LINE.
• Imaginary base line that is used to measure:
  “the angle of incidence of light as well as its corresponding behavior such as reflection and refraction.”
• Used so that we can have accurate measurements.

Answer 8

NORMAL LINE

Question 9

Ang ray of light nga mo-travel gikan sa light source padulong sa surface before siya mo-reflect at a given angle.

Answer 9

INCIDENT RAY

Question 10

The bouncing back of light on a smooth surface or any object that is able to reflect light

Answer 10

REFLECTED RAY

Question 11

The deviation in the path of light rays when the incident ray travels from one medium to another of different index of refraction.

Answer 11

REFRACTED RAY

Question 12

A phenomenon of change in the path of light rays without any change in the medium; it is a light
phenomenon that allows us to see.

Answer 12

REFLECTION OF LIGHT

Question 13

Another phenomenon that can also be reflected.

Answer 13

SOUND

Question 14

The reason we are able to precieve or see an object and
precieve its color - of that particular object is because of-?

Answer 14

REFLECTION

Question 15

Components of different colors (ROYGBIV)

Answer 15

PURE LIGHT

Question 16

The different (blank) slows down the different
velocities of the different components of the pure light.

Answer 16

INDEX OF REFRACTION

Question 17

TWO TYPES OF REFLECTION

Answer 17

SPECULAR AND DIFFUSE

Question 18

An incident ray traveling towards a smooth surface where it rays are going in the same direction.
Occurs at regular surface at regualr surfaces such as plane mirrors and form images

Answer 18

SPECULAR REFLECTION

Question 19

Any reflection that occurs at varying angles due to uneven reflective surface.

Answer 19

DIFFUSE REFLECTION

Question 20

“The incident ray and reflected ray lie in one plane at the point of incidence but on the opposite sides of the normal to the surface.” Law #?

Answer 20

1

Question 21

“The angle of incidence is equal to the angle of reflection” (<i = <r) Law #?

Answer 21

2

Question 22

A phenomenon where light, after being reflected off a surface, is directed back toward the source (or nearly back), regardless of the angle at which it originally arrived.

Answer 22

RETROREFLECTION

Question 23

“The lights are reversible and sometimes result in a phenomenon called RETROREFLECTION.” Law #?

Answer 23

3

Question 24

Ex. 1 Of instruments that applies this law 3

Answer 24

AUTOMATIC REFRACTOMETER

Question 25

Ex. 2 Of instruments that applies this law 3

Answer 25

RETINOSCOPE

Question 26

A kind of reflex that uses the law retroreflection

Answer 26

RED-ORANGE REFLEX

Question 27

A plane sheet of glass whose one side is silvered and the other side is polished. Also known as the "LOOKING MIRROR"

Answer 27

PLANE MIRROR

Question 28

Images with the ff: * same size as the objects * Lies at the same distance behind the mirror as the object is in front. * Virtually and laterally inverted (pre-verted). (Virtual - not real or actual) are formed by?

Answer 28

PLANE MIRROR

Question 29

Parts of a HOLLOW SPHERE whose one side is silvered and the other is polished.

Answer 29

SPHERICAL MIRROR

Question 30

Kinds of spherical mirrors

Answer 30

CONCAVE AND CONVEX

Question 31

A curved mirror whose reflecting surface is TOWARDS the center of the sphere.

Answer 31

CONCAVE

Question 32

A curved mirror whose reflecting is AWAY from the center of the sphere.

Answer 32

CONVEX

Question 33

In prisms, when light passes through it, it bents from (BLANK) to (BLANK)

Answer 33

APEX, BASE

Question 34

"In a homogenous transparent medium or VACUUM, light travels in a straight line." (Unless absorbed, refracted or reflected.)

Answer 34

RECTILINEAR PROPAGATION

Question 35

A type of mirror that converge light rays

Answer 35

CONCAVE

Question 36

A type of mirror that diverge light rays

Answer 36

CONVEX